TY - JOUR
T1 - Scrape-off layer plasma impurities and the choice of candidate materials for the fusion reactor first wall
AU - Vojtsenya, V. S.
AU - Cohen, S. A.
N1 - Funding Information:
This work supported by DOE contract No. DE-
PY - 1990/12/3
Y1 - 1990/12/3
N2 - Analysis of impurity flux measurements in the scrape-off regions of numerous tokamaks shows that, at existing near-wall plasma parameters, the contribution of impurity ions to the sputtering of surfaces located in the scrape-off layer is larger than that of hydrogenic ions. Nevertheless, this places only a weak constraint on the use of high-Z elements in the materials of the first-wall components of fusion reactors, if impurity transport and light-impurity ion content remain close to those in present-day devices.
AB - Analysis of impurity flux measurements in the scrape-off regions of numerous tokamaks shows that, at existing near-wall plasma parameters, the contribution of impurity ions to the sputtering of surfaces located in the scrape-off layer is larger than that of hydrogenic ions. Nevertheless, this places only a weak constraint on the use of high-Z elements in the materials of the first-wall components of fusion reactors, if impurity transport and light-impurity ion content remain close to those in present-day devices.
UR - http://www.scopus.com/inward/record.url?scp=0025539209&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025539209&partnerID=8YFLogxK
U2 - 10.1016/0022-3115(90)90115-4
DO - 10.1016/0022-3115(90)90115-4
M3 - Article
AN - SCOPUS:0025539209
SN - 0022-3115
VL - 176-177
SP - 611
EP - 617
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - C
ER -